Association of esophageal hiatus size with reflux esophagitis and type I hiatal hernia in patients with obesity

Table 2 Correlation between body mass index and esophageal hiatus size

Characteristic	NRNHG			REG
	Obese group (n = 50)	Non-obese group (n = 50)	P value	Obese group (n = 20)	Non-obese group (n = 20)	P value
Age (year)	33.48 ± 5.91	33.64 ± 5.71	0.912	38.4 ± 7.39	38.56 ± 7.61	0.942
Height (cm)	163.15 ± 24.2	167.16 ± 8.83	0.559	171.95 ± 6.55	173.06 ± 10.01	0.684
Weight (kg)	107.55 ± 22.68	60.08 ± 9.97	< 0.01	105.46 ± 25.39	69.94 ± 12.41	< 0.01
BMI (kg/cm2)	38.8 ± 7.2	21.4 ± 2.45	< 0.01	35.54 ± 7.51	23.21 ± 2.72	< 0.01
Sagittal diameter (mm)	15.7 ± 2.08	11.73 ± 2.08	< 0.01	16.11 ± 2.31	15.13 ± 2.59	0.028
Transverse diameter (mm)	15.97 ± 2.06	13.37 ± 1.99	< 0.01	16.77 ± 3.12	14.86 ± 3.59	0.022
Area (mm2)	326.15 ± 78	208.12 ± 64.44	< 0.01	437.77 ± 444.25	259.66 ± 97.8	0.020

BMI: Body mass index; NRNHG: No reflux esophagitis and no hiatal hernia group; REG: Reflux esophagitis group.